WO2000052241A1 - Multifilament for mohair-like pile fabric and pile fabric comprising the same and method for manufacturing the fabric - Google Patents

Abstract

A pile fabric having a pile length of 5 mm to 100 mm which is manufactured by knitting multifilaments having a single fiber finess of 3 to 30 denier and a total finess of 100 to 750 denier and having a twist frequency of 150/m or less, and preferably containing 50 wt % of a flat cross section fiber having a L/W (flat ratio) of the cross section thereof of 2 to 25. The pile fabric has a straightness of pile similar to that of natural mohair and provides a mohair-like pile fabric having a good balance of soft touch feeling and strength of a pile, and can be obtained with a reduced processing loss by employing a double stitch knitting texture in the knitting step mentioned above.

Description

Description ^: Multifilament for mohair pile fabric, pile fabric comprising the same, and method for producing the same

 TECHNICAL FIELD The present invention relates to a multifilament used for a mohair-like pile fabric made of synthetic fibers, a pile fabric made of the same, and a method for producing a mohair-like pile fabric using synthetic fiber filaments. Background art

 The natural mohair pile fabric obtained from Angora goat has a thick and straight hair, which constitutes the pile, and a group of bristles partially converged, It has the appearance feature that the hair with curl shape is partially converged. Also, mohair pile fabrics are made of high quality fur and teddy bears because they have a characteristic that each piece of hair that makes up the pile itself is thick, but it is soft and has excellent heat insulation properties despite its thick appearance. It is used as a pile fabric for stuffed animals such as bears. However, mohair has a problem in that the supply of materials is unstable because it is natural, and it is expensive. For this reason, various pile fabrics having the characteristics of natural mohair using synthetic fibers have been studied, but no satisfactory fabric has yet been obtained.

 For example, when a pile fabric is manufactured by knitting or weaving a synthetic fiber, if worsted yarn is used as a raw material, the worsted yarn is spun from a crimped single fiber. In order to obtain a mohair-like pile with almost no crimp, it is necessary to remove the fiber crimp in a powerful brushing and polishing step after forming the pile. However, it is difficult to completely remove the fine crimp, and strong polishing is required to remove the crimp to the bottom of the pile, and there is a problem in reproducibility.

Also, instead of worsted yarn, especially the thickness of single fiber is around 10 denier (1 l dtex). 場合 When a pile is manufactured by knitting or weaving using the filament as it is, there is no entanglement between the single fibers, so that there is a problem that the single fibers may fall off at the time of forming the pile. As a means for preventing the single fibers from dropping, industrially, entanglement between the single fibers is secured by using a bulk-processed multifilament or by means of combining the multifilament and the worsted yarn. Then, a pile having a straight shape is obtained by removing the crimp by polishing or the like. However, with this method, it is difficult to remove fine crimps, and it may not be possible to completely remove the crimps. There is also a method of obtaining pile fabric by a pile forming method using sliver knitting instead of spun yarn or bulky filament.However, even in this method, sliver as a raw material is provided with crimps to secure entanglement. In order to use the fibers, it is necessary to remove the crimps of the fibers constituting the pile after the pile fabric is manufactured. However, similarly to the above, the crimp cannot be completely removed in this case as well. There was.

 As described above, the conventional pile fabric manufacturing method has drawbacks in that the straightness of the fibers constituting the pile is limited, and the soft feel of the pile and the waist are not balanced.

 Therefore, an object of the present invention is to provide a mohair-like pile fabric using synthetic fibers, in which the fibers constituting the pile have a slate property similar to that of natural mohair, and the soft touch of the pile and the waist are balanced. It is an object of the present invention to provide a novel multifilament and a pile fabric comprising the same. A further object of the present invention is to provide a method for obtaining a pile fabric similar to a natural mohair raw material with a small processing loss (loss due to falling off of a single fiber) when forming a mohair-like pile fabric from synthetic fibers. To provide. Disclosure of the invention

As a result of intensive studies, the present inventors have found that a natural mohair-like pile fabric can be obtained using synthetic fibers as a raw material by using a multifilament having certain conditions. That is, knitting or weaving is performed using a multifilament made of synthetic fiber, which is non-twisted or twisted or twisted to 150 times / m or less, and has a pile length. By forming a pile of, for example, 5 mm to 100 mm, the hair (fiber) constituting the pile, which is unique to a pile fabric made of natural mohair, has a straight shape, and a partial converging group The present inventors have found that it is possible to obtain a pile fabric having the appearance having the following, and have reached the present invention.

 That is, the multifilament for a mohair pile fabric of the present invention is a multifilament made of synthetic fibers, and has a single fiber fineness of 3 to 30 denier (3.3 to 33 dtex) and a total fineness of 10%. It is a multifilament having a denier of 0 to 750 (110 to 830 dtex) and a twist of 150 times / m or less.

 Further, the method for producing a mohair pile fabric according to the present invention is characterized in that a multifilament composed of synthetic fibers is twisted at a rate of 150 times / m or less, and the pile length is increased by knitting and processing the multifilament. It is to manufacture pile fabric of 5 mm-100 mm. In the knitting process, the knitting structure is preferably a double stitch, and a non-twisted filament that is not substantially twisted can be used as the multifilament.

 In the multifilament of the present invention, the flatness of the fiber cross section (hereinafter referred to as the ratio L / W, see FIG. 1) of the length L of the long axis of the fiber cross section to the length W of the short axis thereof is referred to as It is preferable to contain 50% by weight or more of flat cross-sectional fibers having a flattening ratio of 2 to 25.

 It is also effective to attach an oil agent having convergence performance to the multifilament of the present invention.

 Further, the multifilament of the present invention may be a non-twisted filament having substantially no twist.

 Further, the multifilament of the present invention is more preferably made of acrylic synthetic fiber.

 The pile fabric of the present invention is a mohair-like pile fabric obtained by knitting the above-mentioned multifilament. The pile fabric is a mohair-like pile in which the fibers constituting the pile have substantially no crimp, and the pile length is preferably in the range of 5 to 100 mm.

Various pile products can be manufactured using the pile fabric of the present invention, The pile fabric of the present invention is suitably used particularly for clothing, toys (stuffed animals), interiors, and industrial materials.

 Hereinafter, the present invention will be described in more detail.

 The term “multifilament” as used in the present invention refers to an aggregate of two or more monofilaments having a continuous length, and belongs to long fibers in the classification of general synthetic fibers.

The multifilament of the present invention is composed of synthetic fibers having a single fiber fineness of 3 to 30 denier (3.3 to 33 dtex), and has a total fineness of 100 to 75 denier (110 to 8 denier). 30 dtex). If the single fiber fineness is less than 3 denier (3.3 dtex), the texture of the pile will be too soft and tend to be waistless, and the appearance of the fibers constituting the pile will be thin, and the thick hair unique to mohair Is not preferred. On the other hand, if it exceeds 30 denier (33 dtex), the rigidity of the fibers that make up the pile increases, and the texture of the pile becomes coarse and hard, resulting in too strong a waist. They tend to be lost and are not preferred. Fibers with a finer single fiber size and softness and no waist are more suitable for products with a shorter pile length. Conversely, fibers with a higher single fiber size and a harder and tighter waist have a longer pile length. Suitable for products, but within the above range of 3 to 30 denier (3.3 to 33 dtex), for example, in order to obtain a hard evening pile, the pile length of the single fiber is made thick and short. You can do it. If the total fineness of the multifilament is less than 100 denier (11 O dtex), when the mohair pile fabric is manufactured, the finishing weight of the fabric becomes extremely small, and the pile base is exposed. In addition to the decrease in product quality, there is a problem that yarn breakage is likely to occur in the knitting process, and the knitting process must be performed densely to increase the density of the piled fabric, lowering productivity. Tend to. Conversely, if the total fineness of the multifilament exceeds 75 denier (83 Odtex), the finished weight of the pile becomes extremely large, and the weight of the fabric becomes heavy, and at the same time, the feel of the pile becomes hard, which is not preferable. In addition, the multifilament may become too thick, causing some single fibers in the multifilament not to be stuck to the needles during the knitting process, causing trouble in uniform knitting. The preferred range of the total fineness of the multifilament should be selected according to the fiber material. In particular, in the case of acryl-based fibers, the range of 100 to 750 denier (110 to 830 dtex) is preferable, and in the sense of emphasizing the tactile sensation, 150 to 600 denier (170 to 750 denier). 6 7 O dtex) is more preferable.

 The material of the synthetic fiber of the multifilament for mohair pile fabric of the present invention is not particularly limited, but it is preferable to use acrylic fiber, acryl-based fiber, polyester fiber, polyamide fiber, etc. which are generally used as raw cotton for pile. Acrylic fibers are preferred among them, and the fibers themselves have an animal hair-like appearance and feel, and are particularly excellent as a material for a mohair-like pile fabric. Here, the acrylic fiber is a synthetic fiber obtained from a polymer containing 30% by weight or more of acrylonitrile, and is copolymerized with acrylonitrile in addition to acrylonitrile homopolymer. Copolymers obtained by using the obtained vinyl monomers may be used. Vinyl monomers that can be copolymerized with atarilonitrile include vinyl chloride, vinylidene chloride, vinyl bromide, vinylidene bromide, acrylates, methacrylates, acrylamides, methacrylamides, or Mono- or dialkyl-substituted products thereof, acrylic acid, methacrylic acid, itaconic acid, styrene sulfonic acid, methacrylic sulfonic acid, methacryloxybenzene sulfonic acid, methacryloxypropylene sulfonic acid, or these Metal salts, and ammonium diamine salts, glycidyl acrylate, glycidyl methacrylate, acrylic glycidyl ether, and methyl glycidyl ether. Among them, vinyl chloride and vinylidene chloride are preferable, and when flame retardancy is required, a copolymer with vinyl chloride and vinylidene chloride is preferable.

When spinning the spinning solution containing the polymer as described above by a known method such as a dry method or a wet method to obtain a target fiber, a stabilizer having an effect on light resistance and the like is added as necessary. Alternatively, various additives may be added in appropriate amounts for adjusting the gloss. Furthermore, pigments, dyes, etc. may be used as appropriate to make colored fibers. If high flame retardancy is required, a flame retardant may be added as appropriate as long as the tactile sensation of the pile is not impaired. You may. Further, in order to prevent the fiber cross section from cracking, for example, 1 to 20% by weight of a rubbery substance described in JP-A-58-215744 is added to the spinning solution. Is also good. Examples of the method of twisting (twisting) the multifilament include, for example, an application type using a polyester yarn twisting machine and a double yarn such as a commonly used twisted yarn or a twisted yarn. A twister method or the like can be adopted, but is not limited to these. The number of twists is preferably one in which a weak twist of 150 times / m or less is performed for the purpose of preventing partial separation of filaments in the pile knitting step and preventing hair loss after commercialization. If the number of twists exceeds 150 turns / m, fine crimps generated by the twist remain in the pile even after finishing, which is unfavorable in feel and appearance. In order to further emphasize the straightness of the pile, it is preferable to use a non-twisted filament having substantially no twist. Here, “having substantially no twist” is a concept that includes not only a state where there is no twist but also a state where no artificial twisting is performed.

 The fiber cross-sectional shape of the synthetic fiber used in the present invention is not particularly limited, but when a pile fabric is manufactured, a flat cross-section is preferable because a round cross-section tends to give a hard waist when touching the pile. . For example, when the multifilament is composed of thick fibers having a single fiber fineness of 20 denier (22 dtex) or more, if the fiber cross-section has a low flattening ratio, the pile will have a strong stiffness. It is preferable that the flatness of the fiber is 6 or more, but if the flatness is too high, the fiber will become too stiff and the fiber will be quite thick at the same time, so the flatness should be 25 or less. Is preferred. Conversely, if the multifilament is made of fine fibers with a single fiber fineness of 10 denier (11 dtex) or less, if the fiber cross-section has a high flatness, the pile will become extremely weak. Therefore, it is preferable that the flattened shape has a low flattening shape of 5 or less. However, if the flattening ratio is too low, the stiffness becomes too strong. On the contrary, the flattening ratio is preferably in the range of 2 to 5. As a whole, the flatness of the multi-filament fiber is preferably in the range of 2 to 25. It is not necessary that the cross section of all the fibers in the multifilament is flat, but it is preferable that the flat fiber having a cross sectional shape in the range of the flattening ratio is contained by 50% by weight or more. The flatness of the fiber cross section can be measured by observing the multifilament fiber cross section using, for example, a scanning electron microscope.

In order to obtain the above-mentioned flat cross-section fiber, the spinning nozzle is a wet type. In the case of the spinning method, a hole having a circular or elliptical shape may be used. By appropriately adjusting the conditions in the coagulation bath, a desired fiber having a flat cross-sectional shape can be obtained. In the case of dry spinning, it is preferable to use a nozzle having a hole shape close to the target fiber cross-sectional shape.

 In the present invention, the pile length refers to the length from the base fabric of the piled pile fabric to the tip of the pile. If the pile length is shorter than 5 mm, it becomes difficult to make the pile length uniform, and the pile length does not approximate mohair, and the commercial value is reduced. Conversely, when knitting is performed so that the pile length is longer than 100 mm, there is a problem that the knitting efficiency is reduced, and the fibers constituting the pile are liable to be entangled with each other, which also tends to lower the commerciality. There is. The pile length is also related to the flatness of the synthetic fiber constituting the pile and the fineness of the single fiber. When the flatness of the synthetic fiber is 5 or less and the fineness of the single fiber is as low as 10 denier (1 l dtex) or less, However, the shorter the pile length is, the more excellent the straightness is, and at the same time, the pile is stiff. Therefore, the pile length is more preferably in the range of 10 to 40 mm. Conversely, in the case of synthetic fibers having a high flatness of 7 or more and a high single fiber fineness of 20 denier (22 dtex) or more, the longer the pile length, the better the straightness and the stiffness. Therefore, the pile length is more preferably in the range of 50 to 100 mm.

 By knitting or weaving the multifilament of the present invention as described above, a desired mohair-like pile fabric can be obtained. The obtained pile fabric can be used for clothing, toys (such as stuffed toys), interiors, industrial materials, and the like, but is particularly suitable for clothing and toys utilizing the characteristics of natural mohair.

For knitting or weaving the multifilament to produce a pile fabric, a known knitting machine or weaving machine can be used, but knitting is preferable in terms of productivity, cost, and ease of processing. . The knitting of the pile in the present invention is performed by a general knitting process or a machine modified to form a long pile.For a flat knitting structure, for example, use a circular knitting machine. In the case of a warp knitting structure, a known knitting machine such as a raschel knitting machine or a tricot knitting machine can be used, but is not particularly limited. Also, when double stitch knitting is employed, the knitting can be performed using a known circular knitting machine. In the knitting process, the knitting structure is not particularly limited. In particular, in general circular knitting (flat knitting structure) processing, double stitch knitting is performed instead of ordinary knit knitting. With this structure, hair loss can be prevented, the amount of loss due to the loss of single fibers in the brushing and polishing steps (hereinafter referred to as processing loss) can be suppressed, and even in the final product, there is little hair loss. It is preferable because a product can be obtained. The double stitch knitting structure refers to a knitted knitted fabric having a W-shaped nap with folded naps, whereas a normal knitted pile has a V-shaped with naps folded (a conceptual diagram is shown in Fig. 2). In the present invention, the multifilament used for knitting may be directly applied to a knitting machine. However, at the time of knitting, the filament monofilament is used. In the case of fluffing due to separation, adding a small amount of oil to the multifilament increases the convergence of the single fiber, and can suppress separation (hereinafter referred to as “burr”). The oil agent used for improving the convergence of the single filament of the multifilament used herein is not particularly limited, and generally commercially available oil agents for yarn which improve the convergence can be used. Examples of the yarn oil include nonionic surfactants such as polyoxyethylene, alkyl ether, polyether, and polyoxyethylene-ethylene oxide copolymer oils, and anionic surfactants. Examples of the activator include oils such as aliphatic carboxylic acids and amino acids, and examples of hydrophobic oils include oils such as liquid paraffin, and these oils may be used alone or in combination of two or more. Can be. Among the above oil agents, liquid paraffin oil agents are particularly preferable.For example, when MYB-39S (manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) is used, the amount of the oil agent to be attached is 0. The range of 25% to 2.5% is preferable in that the influence on the product is small and variation in knitting can be suppressed. If the amount of oil applied exceeds 2.5%, the final product may have a sticky feeling, or it may absorb dust and become easily contaminated. Therefore, it is desirable to reduce the amount of dispersion with the smallest possible amount. In addition, the method of attaching the oil agent to the multifilament is, for example, a method of adding it as a primary oil or a secondary oil in a multifilament production process, or a method of rewinding the obtained filament bobbin after the production of the multifilament. There is no particular limitation on the method or process, such as directly adding oil to the multifilament before knitting. I just need to be. It is more preferable that the number of twists of the multifilament, in which the convergence is improved by the attachment of the convergence oil agent, is not more than 80 turns / m from the viewpoint of pile separability in the case of a pile fabric.

 Furthermore, in natural mohair, the hair that constitutes the pile generally has a strait shape. Particularly, when the pile length (hair length) is long, about 2 ridges per inch are used. Some have undulations and are partially converged. In order to obtain such a pile fabric resembling natural mohair, first, a straight tone pile fabric is obtained by the method described above, and then processed using a heat brush or a rotary evening dryer. The pile fabric having the napped shape can be obtained. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is an explanatory diagram of the flatness of a fiber cross section of a synthetic fiber.

 Figure 2 is a conceptual diagram of the knitting structure of a normal knit pile.

 Figure 3 is a conceptual diagram of the knitting structure of a double stitch knit pile. BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

 (Example 1)

A copolymer resin consisting of 49.5% by weight of acrylonitrile, 50% by weight of vinyl chloride, and 0.5% by weight of sodium styrenesulfonate is dissolved in acetone to obtain a 29.5% by weight spinning solution. The spinning stock solution was previously colored with an acetone-soluble cationic dye, and 10% by weight of an acetone was dissolved using a circular nozzle (0.18 mm, 50 holes). Wet spinning at a high speed in aqueous solution. The obtained gel-like fiber is stretched at a high speed of 2.5 times in warm water at 50 ° C to 60 ° C, and further stays for at least 20 seconds under a slightly relaxed state at 60 ° C to 65 ° C. After desolvation in a hot water bath at ° C, a commercially available soft finish oil, Polyamine Polyamide-based New Soft BN (manufactured by Kitahiro Chemical Co., Ltd.), is attached to the fiber at 1.0% to the fiber weight, and then dried. Dry at 150 ° C, and in the same atmosphere After performing a 3.4-fold heat stretching in the air, a 12% relaxation heat treatment was performed at 160 ° C. Next, before the winding step, a liquid paraffinic mineral oil as a secondary oil agent was applied in an amount of 1.4% based on the fiber weight to obtain a multifilament. The single fiber fineness of this multifilament was 10 denier (1 ldtex), and the total fineness was 500 denier (56 Odtex). When the cross-sectional shape of the fiber of this multifilament was observed using a scanning electron microscope, 68% by weight of the flat cross-section fiber was present in the multifilament, and the flatness of the flat cross-section fiber was 3% on average. It was 8. A polyester knitting machine using a circular knitting machine [Knitting knitting machine made by Shengchang Machinery of Korea, gauge: 14 G, number of courses: 23 Course / inch] using the above-mentioned multifilament and a double stitch structure. Pile fabric using ramen [single fiber fineness: 3 denier (3.3 dtex), number of filaments: 50 f, total fineness: 150 denier (17 Odtex)] and acrylic 1 / 30th count ground yarn An acrylate resin was applied to the back of the pile, and dried at 130 ° C for 5 minutes using a Pinten Yuichi dryer. After that, it was processed once at 120 ° C and once at 100 ° C with a polisher processing machine to adjust the pile direction, and the surface feathers were shaved with a shearing processing machine. [Finish weight: 490 g / m ² ]. When this pile fabric was used as a stuffed skin, it had a natural calm light, and its texture was not sticky and had a tactile feel like animal hair, and had a waist. It was a mohair-like pile fabric (bore) excellent in bulkiness. (Example 2)

A copolymer resin consisting of 93% by weight of acrylonitrile, 6% by weight of vinyl acetate and 1% by weight of methallylsulfonic acid was dissolved in dimethylacetamide to prepare a 26.5% by weight spinning solution. Using a flat nozzle (long axis 0.345 mm, short axis 0.115 mm, number of holes 60), the undiluted solution was converted to 20% by weight of 65% by weight of dimethylacetamide and 35% by weight of water. Wet spinning in aqueous solution at ° C at high speed. After washing the obtained gel-like fiber in warm water, it was subjected to primary stretching 3.5 times with boiling water. Thereafter, 95% by weight of a fatty acid ester-based oil agent, JP-POL PA-1 (manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.), and Zontes TL, a quaternary ammonium salt-based oil agent, were used as spinning oil agents. 5% by weight of a mixed oil agent was applied in an amount of 0.75% based on the fiber weight. After sufficiently drying the yarn, it was further subjected to a double stretching by a dry heat and a relaxation heat treatment of 10%. Further, before the winding step, 1.0% by weight of liquid paraffinic mineral oil was adhered as a secondary oil agent to obtain a multifilament. The single filament fineness of this multifilament was 10 denier (11 dtex), and the total fineness was 600 denier (670 dtex). When the cross-sectional shape of the multifilament was observed using a scanning electron microscope, 92% by weight of the flat cross-section fiber was present in the multifilament, and the flatness was 3.0 on average. Was. Circular knitting machine set to double stitch structure using the above multifilament [Knitting knitting machine made by Shengchang Machine of Korea, number of gauges: 14G, number of courses: 23Course / inch], polyester multifilament [ Knitted pile fabric using single fiber fineness of 3 denier (3.3 dtex), number of filaments 50 f, total fineness of 150 denier (17 Odtex)] and acrylic 1 / 3-th An acrylic resin was applied to the back of the pile, and dried at 130 ° C. for 5 minutes using a Binten Yuichi dryer. After that, it was processed once at 120 ° C and once at 100 ° C with a polisher processing machine to adjust the pile direction, and the surface feathers were shaved with a shearing processing machine. The fabric was obtained [final fabric weight: 5 10 g / m ² ]. When this pile fabric (bore) is used as a stuffed skin, it has excellent straightness, has a natural calm luster, and has a non-sticky feel and animal-like touch. It was a straight pile fabric that had a stiffness and an excellent bulkiness.

 (Example 3)

A copolymer resin consisting of 49.5% by weight of acrylonitrile, 50% by weight of vinyl chloride, and 0.5% by weight of sodium styrene sulfonate was dissolved in acetone to prepare a 29.5% by weight spinning solution. and precolored the spinning stock solution at § seton-soluble cationic dyes, circular nozzle 0. 1 5 mm, with a number of pores 2 5), in § Se tons aqueous 10 weight _^0/0 Wet spinning at high speed. The obtained gel-like fiber is stretched 2.5 times at high speed in warm water at 50 ° C to 60 ° C, and stays for at least 20 seconds in a slightly relaxed state. After desolvation in the bath, the same softening oil as used in example 1 (Nyusofu preparative BN) and dried at applied 1 50 ^e C 0. 8% relative to the fiber weight as unfocused oil, After a further 3.4 times hot stretching, 12% relaxation heat treatment Was given. Next, before the winding step, a liquid paraffinic mineral oil as a secondary oil agent was applied in an amount of 1.4% based on the fiber weight to obtain multifilament. The single filament fineness of this multifilament was 6 denier (6.7 dtex) and the total fineness was 150 denier (17 Odtex). When the cross-sectional shape of the fiber of this multifilament was observed by using a scanning electron microscope, 82% by weight of the flat fiber was present in the multifilament, and the flatness of the flat fiber was 2% on average. Was 3. Circular knitting machine set to double stitch structure using the above multifilament (using a knitting machine made by Shengchang Machinery of Korea, using 26 courses / inch gauges: 14 G, drawing: 30 mm) Using polyester multifilament [single fiber fineness 3 denier (3.3 dtex), number of filaments 50 f, total fineness 150 denier (17 Odtex)] and acrylic 1/30 count A pile fabric was knitted using ground yarn, an acrylate-based resin was applied to the back of the pile, and dried at 130 ° C for 5 minutes using a binten dryer. After that, the pile direction is adjusted by processing once at 120 ° C and once at 100 ° C with a polisher, and the surface feathers are shaved with a shearing machine, and the pile length is 15 mm and double-stitched. A textured pile fabric was obtained. This was brushed with a polisher finish, and the obtained straight pile fabric (bore) was used as a stuffed skin. It has a natural calm luster and has a special appearance. Further, the texture was mohair-like pile fabric which had no stickiness, had an animal hair-like feel, was stiff, and was excellent in bulkiness.

 (Example 4)

Polyethylene terephthalate having an intrinsic viscosity of 0.53 was spun with a melt extruder. The spinning nozzle used was a flat nozzle (0.75 mm in long axis width, 0.16 mm in short axis width, 30 holes) at a spinning temperature of 270 to 285 ° C and a take-up speed of 400 m / min. Was. The obtained fiber was stretched twice in hot water at 80 ° C and then stretched 2.5 times in hot water at 85 ° C. Heat treatment was performed at the mouth of the heat sink to obtain a multifilament. The single filament fineness of this multifilament is 10 denier (11 dtex), the total fineness is 300 denier (33 Odtex), and the cross-sectional shape of this fiber was observed using a scanning electron microscope. , Average flatness is 4.5 It was a flat cross section fiber. Circular knitting machine set to double stitch structure using the above-mentioned multifilament (using a knitting machine made by Shengchang Machine of Korea, number of courses: 26 Course / inch, number of gauges: 14 G, drawing: 30 mm Polyester multifilament [single fiber fineness 3 denier (3.3 dtex), number of filaments 50 f, total fineness 150 denier (17 Odtex)] and acrylic 1 / 30 Knit pile fabric using ground yarns of the same yarn count, apply acrylic acrylate resin on the back of pile, and dry at 130 ° C for 5 minutes using Pinten Yuichi dryer Let me know. After that, it is processed once at 120 ° C and once at 100 ° C with a polisher, and the pile direction is adjusted.The surface feathers are shaved with a shearing machine, and the pile length is 15 mm. Thus, a pile fabric having a double stitch structure was obtained. When the obtained pile fabric (bore) was used as a stuffed skin, it had a natural calm luster, had a non-sticky feel, had a waist, and could be a substitute for mohair. there were.

 (Comparative Example 1)

A copolymer resin consisting of 49.5% by weight of acrylonitrile, 50% by weight of vinyl chloride and 0.5% by weight of sodium styrenesulfonate is dissolved in acetone to prepare a 29.5% by weight spinning solution. The spinning solution was prepared and colored in advance with an acetone-soluble cationic dye. The solution was dissolved in a 10% by weight aqueous solution of acetone using a circular nozzle (0.35 mm, 25 holes). Wet spinning at high speed. The obtained gel-like fiber is stretched at a high speed of 2.5 times in warm water at 50 ° C to 60 ° C, and stays for at least 20 seconds under a relaxed state of 60 ° C to 60 ° C to 6 ° C. After desolvation in a 5 ° C hot water bath, a softening oil (New Soft BN) similar to that used in Example 1 was applied by 1.0% to the fiber weight, and dried at 150 ° C. After performing a 3.4-fold thermal stretching, a 12% relaxation heat treatment was performed. Next, before the winding process, liquid paraffinic mineral oil was attached as a secondary oil agent at 1.4% based on the fiber weight to obtain multifilament. The single fiber fineness of this multifilament was 40 denier (44 dtex), and the total fineness was 100 denier (111 dtex). When the cross-sectional shape of the fiber of the multifilament was observed using a scanning electron microscope, 68% by weight of the flat fiber was present in the multifilament, and the average flatness of the flat fiber was Was 2.8. This multifi Circular knitting machine set in double stitch structure using lament [Knitted knitting machine made by Shengchang Machine of Korea, gauge: 14G, number of courses: 23 Course / inch], polyester multifilament [single fiber] Using a 3 denier (3.3dtex) fineness, 50 f filaments, a total fineness of 150 denier (1 Ί Odtex)] and an acrylic 1 / 30th count ground yarn, knit a pile fabric, Acrylic ester resin was applied to the back of the pile, and dried at 130 ° C for 5 minutes using a Pinten Yuichi dryer. After that, once at 120 ° C, 100 times with a polysilicon processing machine. C was processed once to adjust the pile direction, and the surface feathers were shaved with a shearing machine to obtain a pile fabric having a pile length of 35 mm [final fabric weight: 150 g / m ² ]. When this pile fabric was used as a stuffed skin, the tactile sensation was hard and extremely strong.

 Table 1 below shows the results of Examples 1 to 4 and Comparative Example 1. table 1

なお、 表 1に示す各評価項目についての評価方法及び評価基準は以下の通りで ある。

The evaluation methods and evaluation criteria for each evaluation item shown in Table 1 are as follows.

 (Straightness)

 Evaluation method: Based on a sensory test (comparison with natural mohair).

 Evaluation criteria: The following five-level evaluation.

5: Has the same straightness as natural mohair. 4: Strong straightness, but some crimp shape remains

3: The crimp shape is clearly left on the whole.

2: Crimp shape remains strongly throughout.

 1: Extremely strong crimp shape remains.

 (Soft feeling)

Evaluation method: Based on sensory test.

Evaluation criteria: The following five-level evaluation.

 5: Very soft feeling.

 4: Good soft feeling.

3: No features.

 2: Slightly too soft or slightly too hard.

 1: Too soft (no waist) or too hard.

 (Glossy)

Evaluation method: Based on sensory tests.

Evaluation criteria: The following five-level evaluation.

 5: Luster full of animal hair.

 4: Luster with some animal hair feeling.

 3: No features.

 2: Slightly glossy or slightly glossy.

 1: Very glossy or no gloss at all.

 (Waist)

Evaluation method: Based on a sensory test.

 Evaluation criteria: The following five-level evaluation.

 5: Very hip.

 4: Good waist.

 3: No features.

 2: There is little waist.

 1: There is no waist at all.

(Comprehensive evaluation) Evaluation criteria: The following five-level evaluation ₍

 5 Very good

4 Excellent

3 Normal (Pass level)

2 Slightly inferior

 1 Inferior.

(Example 5)

A copolymer resin consisting of 49.5% by weight of acrylonitrile, 50% by weight of vinyl chloride and 0.5% by weight of sodium styrenesulfonate is dissolved in acetone to prepare a 29.5% by weight spinning solution. The spinning stock solution was pre-colored with an acetone-soluble cationic dye, and high-speed dissolved in a 10% by weight aqueous solution of acetone using a circular nozzle (00.15 mm, 50 holes). For wet spinning. The obtained gel-like fiber is stretched at a high speed of 2.5 times in warm water of 50 ° C to 60 ° C, and further retained for at least 20 seconds under a relaxed state of 60 ° C to 65 ° C. After desolvation in a warm water bath, the same soft finishing oil (New Soft BN) as used in Example 1 was applied as a non-convergent oil in an amount of 0.7% based on the fiber weight. After being dried and further stretched by a factor of 3.4, it was subjected to a 12% relaxation heat treatment and wound around a bobbin as a non-twisted yarn. The single fiber fineness of this multifilament was 10 denier (1 ldtex), and the total fineness was 500 denier (560 dtex). Using the obtained non-twisted multifilament, (a) a circular knitting machine set to a normal knitting fabric, (b) a circular knitting machine set to a double stitch structure, [(a), (b), In each case, a knitting knitting machine made by Shengchang Machinery of Korea, gauge number: 14G, number of courses: 23 Course / inch], polyester multifilament [single fiber fineness 3 denier (3.3 dtex)] A pile fabric with a pile length of 7 mm was knitted using fifty fifty filaments, a total fineness of 150 denier (17 Odtex)] and a ground yarn of 1 / 30th count of acryl. Acrylic ester resin was applied to the back of the pile fabric and dried at 130 ° C for 5 minutes using a pin tenter dryer.o After that, the mixture was heated at 120 ° C using a polyester processing machine. Once in the same direction at 100 ° C to adjust the pile direction, and after passing through the brushing process once, the pile surface A pile fabric having a pile length of 7 mm was obtained by cutting with a shearing machine. [Finishing weight: (a) Normal knitting; 400 g / m ² , (b) Double stitch knitting: 450 g / m ² ]. The pile fabrics (a) and (b) thus obtained are both pile fabrics in which the straight shape is maintained from the bottom of the base fabric in the same manner as those obtained by directly weaving the filaments. This product has a slate-like appearance and a soft touch that is equivalent to that of a pile fabric that uses this as a material. Here, in order to obtain a fabric having a pile length of 7 mm, in a polisher process, a brushing process and a shirring process, 7.0 g of a normal knitting of the fabric (a) was performed with respect to a pile weight of 100 g. In contrast to processing holes, the double-stitch knitted fabric (b) weighed 1.2 g. Also, in the final product, compared to the double-stitched fabric (b), the knitted fabric (a) usually showed hair breakage when the surface was rubbed by hand, and was inferior in merchantability.

 (Example 6)

A copolymer resin consisting of 93% by weight of acrylonitrile, 6% by weight of vinyl acetate, and 1% by weight of methyl sulfonic acid was dissolved in dimethylacetamide to prepare a 26.5% by weight spinning solution. . Using a circular nozzle (00.15 mm, 100 holes), the stock solution was wet-spun at high speed into an aqueous solution at 20 ° C with 75% by weight of dimethylacetamide and 25% by weight of water. After the obtained gel-like fiber was washed in warm water, it was subjected to primary stretching 3.5 times with boiling water. Then, as a spinning oil agent, Zontes IB (manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) as a softening oil agent was applied in an amount of 0.65% based on the fiber weight, and the obtained yarn was sufficiently dried. Then, the secondary stretching was further doubled and the relaxation heat treatment of 10% was performed. Furthermore, before the winding process, MYB-39S (Matsumoto Yushi Pharmaceutical Co., Ltd.), a liquid paraffinic mineral oil, was added as a secondary oil agent to (c) no adhesion and (d) the weight of multifilament. On the other hand, 0.5% by weight was adhered to obtain a multifilament having a single fiber fineness of 6 denier (6.7 dtex) and a total fineness of 600 denier (67 Odtex). Each of the obtained non-twisted filaments was turned into a clockwise twist of 60 turns / m (hereinafter referred to as S twisted yarn) by an application twister using an Italian twisting machine. A circular knitting machine set to a double stitch structure using each of the obtained S-twisted filaments [pile machine: knitting machine made by Shengchang Machinery of Korea, game machine Polyester multifilament [single fiber fineness 3 denier (3.3 dtex), filament number 50 f, total fineness 150 denier (14 G, course number: 2 OCourse / inch) 17 7 Odtex)] and Acryl 1 / 30th yarn were used to knit the pile fabric. Acrylic ester resin is applied to the back of the pile, and the surface is dried using a Pinten Yuichi dryer. Dried at C for 5 minutes. After that, once at 120 ° C with a polisher, 100 times. C was processed once to adjust the pile direction, and the pile surface was trimmed with a shearing machine to obtain a pile fabric with a pile length of 30 mm. [Finish weight: 600 g for both (c) and (d)] / m ² ]. The obtained pile fabrics (c :) and (d) are pile fabrics in which the straight shape is maintained from the bottom of the base fabric, as in the case where the filaments are directly knitted. The product had a slate-like appearance and soft touch that were equivalent to the pile fabric used. The processing loss of the cloth (c) was 2.0 g, and the processing loss of the cloth (d) was 1.1 g. Among the fabrics (c :) and (d), (d) was a product with a better balance of productivity and processing loss.

 (Example 7)

 The pile fabric having a pile length of 30 mm obtained in (d) of Example 6 was heated to an internal temperature of 95 ° C under a 100% humidity condition while blowing saturated steam with a rotary tumbler dryer. For 20 minutes. After stopping the injection of the saturated steam, the mixture was cooled to 60 ° C and the pile fabric was taken out. The pile fabric (f) obtained was a product having a pile of natural mohair with a gentle undulation of about two peaks per inch, and a partially converged appearance.

 (Comparative Example 2)

An acryl-based fiber having the same composition as in Example 6 was crimped at a rate of 8 dens per inch in a press-in type steam set, and a denier of 10 (11 dtex) X 15 2 mm was obtained. —I got a pull. This was used as a yarn of 2/28 count, lower twist 350 (twice / m) / twist 230 (twist / m). This yarn is knitted into a knitting knitting machine with a general knitting structure [a knitting knitting machine made by Nagata Kikai Co., Ltd., gauge: 14 G, number of courses: 23 Course / inch], polyester multifilament [single fiber fineness: 3 denier Per cent (3.3 dtex), number of filaments 50 f, total fineness 150 denier (17 Odtex)] A pile fabric was knitted using a 1 / 30th-counted ground yarn. An acrylate resin was applied to the back surface of the pile fabric and dried at 130 ° C. for 5 minutes using a Binten Yuichi dryer. After that, it is processed four times with a brushing machine to untwist the pile yarn, and polish is performed once at 150 ° C, 120 ° C, and 100 ° C, respectively. The pile surface was trimmed with a shearing machine to obtain a pile fabric having a pile length of 7 mm and a finish weight of 410 g / m ² . In the pile fabric (g) obtained, the crimp was removed from the tip of the pile to the bottom to a length of about 50%, but fine crimp remained in the remaining part. Compared with the 30 mm pile fabric of Example 6, the product was different in shape from the straight-like appearance of the pile fabric made of natural mohair. Further, in this processing, in order to obtain 100 g of the pile cloth, 15.5 g of pile dust was generated by the polishing processing, which was inferior to those of Examples 6 and 7.

 (Comparative Example 3)

A copolymer resin consisting of 49.5% by weight of acrylonitrile, 50% by weight of bichloride, and 0.5% by weight of sodium styrenesulfonate is dissolved in acetone to obtain a 29.5% by weight spinning solution. The spinning stock solution was previously colored with an acetone-soluble cationic dye, and was then placed in a 10% by weight aqueous solution of acetone using a circular nozzle (0.18 mm, 60 holes). Wet spinning at high speed. The obtained gel fiber is stretched 2.5 times at high speed in warm water at 50 ° C to 60 ° C, and furthermore, stays for at least 20 seconds under a slightly relaxed state at 60 ° C to 65 ° C. After removing the solvent in a warm water bath, Zontes IB (manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.), which is a commercially available soft finishing oil, is applied to the spinning convergence oil by 1.0% based on the fiber weight, and the dry heat is applied. After drying at ° C and further performing a 3.4-fold heat stretching in the same atmosphere, a 12% relaxation heat treatment was performed at 160 ° C to obtain a multifilament. The single fiber fineness of this multifilament was 10 denier (11 dtex), and the total fineness was 600 denier (67 Odtex). When the cross-sectional shape of the fiber of this multifilament was observed using a scanning electron microscope, 68 wt% of the flat cross-sectional fiber was present in the multifilament, and the average of the flatness of the flat cross-sectional fiber was 3%. It was 8. S-twisting was performed 350 times on the multi-filaments by an application method using a twisting machine. Then the obtained Circular knitting machine set to double stitch structure using S twisted yarn filament [Pile machine: Knitting machine made by Shengchang Machine of Korea, gauge: 14 G, number of courses: 23 Course / inch] Polyester multifilament [single fiber fineness 3 denier (3.3 dtex), number of filaments 50 f, total fineness 150 denier (170 dtex)] and acrylic 1 / 30th yarn alignment A pile fabric was knitted using the ground yarn of No. 1, an acrylate resin was applied to the back surface of the pile, and dried at 130 ° C. for 5 minutes using a Pinten Yuichi dryer. After that, the pile was machined once at 120 ° C and once at 100 ° C using a polishing machine to adjust the pile direction, and the surface feathers were shaved with a shearing machine to make the pile length 35 mm pile fabric was obtained [final fabric weight: 1100 g / m ² ]. When the obtained pile fabric (h) was used as a stuffed skin, a strong twist remained in the nap portion and a crimp-like shape was obtained, resulting in poor stratability. The total amount of pile waste generated in the brushing and shearing steps was 2.2 g to obtain 100 g of pile.

 Table 2 shows the results of Examples 5 and 6 and Comparative Examples 2 and 3 described above. Table 2

なお、 表 2に示す各評価項目に関する評価方法及び評価基準は以下の通りであ る。

The evaluation methods and evaluation criteria for each evaluation item shown in Table 2 are as follows. You.

 (Hair loss)

 Evaluation method: Based on sensory tests.

 Evaluation criteria: The following five-level evaluation.

5: No hair loss when rubbing the surface by hand.

 4: Some hair loss is observed when the surface is rubbed by hand.

3: Hair loss is observed when the surface is rubbed by hand.

2: When the surface is rubbed by hand, hair loss is observed and is a problem as a product.

 1: When the surface is rubbed by hand, hair loss is found to be severe, which is a problem as a product.

 (Soft feeling) and (straightness)

 All evaluation methods and evaluation criteria are the same as in Table 1.

 (Comprehensive evaluation)

 The evaluation criteria are the same as in Table 1, with a 5-level evaluation. Industrial applicability

 By using the multifilament for mohair pile fabric of the present invention, a pile fabric having excellent straightness, a soft touch similar to natural mohair, and a stiffness can be obtained. Using these pile fabrics, suitable pile products can be obtained as clothing, toys, interiors, and industrial materials. Further, according to the production method of the present invention, it is possible to obtain a natural mohair-like pile fabric having a soft touch feeling and a straight-like appearance with a small processing loss by using synthetic fibers.

Claims

The scope of the claims I. A mohair having a monofilament fineness of 3 to 30 denier, a total fineness of 100 to 750 denier and a twist of 150 times / m or less, which is a multifilament composed of synthetic fibers. Multifilament for tone pile fabric.  2. A flat section fiber having a flat rate of 2 to 25 expressed by a ratio L / W of a length L of the major axis of the fiber cross section to a length W of the minor axis of the fiber section is 50% by weight or more. Multifilament described in 1.  3. The multifilament for a mohair-like pile fabric according to claim 1, wherein an oil agent having convergence performance is adhered.  4. The multifilament according to claim 1, which is a non-twisted filament having substantially no twist.  5. The multifilament according to claim 1, comprising an acryl-based synthetic fiber. 6. A mohair-like pile fabric formed by knitting the multifilament according to any one of claims 1 to 5 to form a pile.  7. The pile fabric according to claim 6, wherein the fibers constituting the pile have substantially no crimp, and the pile length is in the range of 5 to 100 mm.  8. A pile product using the pile fabric according to claim 6 or 7.  9. A multifilament made of synthetic fiber is twisted at a rate of 150 times / m or less, and the multifilament is knitted so that the pile length is 5 mm to 10 mm. A method for producing a mohair-like pile fabric, which is a 0 mm pile fabric.  10. The method according to claim 9, wherein the knitting structure is a double stitch in the knitting process.  10. The method for producing a pile fabric according to claim 9, wherein the multifilament is a non-twisted filament that is not substantially twisted.  12. The method for producing a pile fabric according to claim 9, wherein the single filament fineness of the multifilament is 3 to 30 denier, and the total fineness is 100 to 7500 denier. 13. The method for producing a pile fabric according to claim 9, wherein an oil agent having convergence performance is attached to the multifilament. 14. The method for producing a pile fabric according to claim 9, wherein the multifilament comprises acryl-based synthetic fibers.  15. A mohair-like pile for imparting a curled shape to fibers constituting the pile by using a hot brush and / or a rotary tumbler dryer with respect to the pile fabric produced by the method according to claim 9. Fabric production method.